110 LICHENES. [Cvltema. 



* * * Thallas somewhat foliaceous, thin, lobed, principally at the 

 circumference. 



10. C. Burgessii, ACH. Thallas foliaceous, thin, subimbri- 

 cated, glaucous, greenish or dark brown ; the lobes rounded, 

 sinuated, crenulated, crisped, villose beneath ; apothecia depress- 

 ed, flattish, dusky brown, with a crisped and minutely foliace- 

 ous border. Ach. L. U. p. 645. E. Bot. t. 300. 



On old trees in the woods, near Killarney. The inferior surface of 

 the frond shows an affinity with the genus Sticta ; for the down be- 

 neath is composed of broad acute stellate lamince. The apothecia are 

 pedunculated with an elevated portion of the thallus, which, seen from 

 behind, appears a deep cavity : the backs of the apothecia are downy 

 in the same way as the bottom of the thallus, and this downiness even 

 extends a little way from the apothecia on the upper surface. The edges 

 of the thallus are thickened and dark, as also of the buds as they ex- 

 pand into foliaceous scales on the margins of the apothecia. 



11. C. nigrescens, ACH. Thallus foliaceous, membranaceous, 

 consisting of a single leaf, orbicular, depressed, wrinkled, rotun- 

 dato-lobate, dark olive-green or nearly black ; apothecia central, 

 crowded, small, at length convex, reddish-brown, their border 

 entire. Ach. L. U. p. 646. Eng. Bot. t. 345. 



Near Belfast, and at the Dargle River, Mr. Templeton. Afc 

 Dunkerron, common. The apothecia sometimes scattered, pruinose. 



12. C.flaccidum, ACH. Thallus foliaceous, membranaceous ; 

 the lobes, ascending, rounded, plicate, entire, having buds as 

 a fuliginous powder on their centre ; apothecia scattered, red- 

 dish. Ach. L. U. p. 647. Eng. Bot. t. 1653. 



On trees, near Bantry, Miss Hutchins. When moistened of a 

 paler colour and greener at the edges than the preceding, and when dry 

 never so remarkably wrinkled. 



13. C. granulatum, HOOK. Thallus foliaceous, membranace- 

 ous, somewhat wrinkled, plaited, granulated on both sides, 

 blackish-olive ; the lobes, ascending, rounded, their margins 

 waved, crisped, entire; apothecia scattered, dark brown. Hook. 

 Eng. Flor. v. 5, p. 211. C.furvum, Ach. L. Un. p. 650. 



On the ground, near Belfast, Mr. Templeton ; at Dunkerron. The 

 buds or grains are larger than in the preceding. 



14. C. crispum, BORR. " Lobes of the thallus thinnish, much 

 divided, their segments imbricated, crowded, rounded, concave, 

 with entire or denticulate, raised edges ; apothecia sessile, the 

 border crenulate, at length leafy." Borr. in Eng. Bot. Supp. t. 

 2716, /.I. 



On stones, and on mortar. Near Belfast, Mr. Templeton. In the 

 South of Ireland not uncommon. 



15. C. sinuatum, HOOK. Thallus foliaceous, membranace- 

 ous, imbricated, and plaited, dark glaucous-green ; the lobes 



